JP2008111417A - Air compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the cooling efficiency and the compression efficiency of a compression section by introducing a cooled cooling air into a cover member when a plurality of compression units are arranged side by side.
When a first compression unit 11 and a second compression unit 41 are arranged side by side on an air tank 2, the air intake ports 20 and 50 of the packages 12 and 42 are arranged facing each other. Set up. Accordingly, the two compression units 11 and 41 collect the air intake ports 20 and 50 in one place and separate the air intake ports 20 and 50 from any of the external discharge ports 21, 22, 51, and 52. As a result, the air intake ports 20 and 50 can take in the cooled air into the packages 12 and 42 without sucking the cooling air whose temperature has risen discharged from the packages 12 and 42.
[Selection] Figure 2

Description

  The present invention relates to an air compression apparatus including a compressor that compresses and discharges, for example, sucked air.

  In general, an air compressor is roughly constituted by a compression unit having a compression unit that compresses and discharges sucked air and an air tank that stores compressed air discharged from the compression unit. In addition, as an air compressor, there is a package type air compressor in which the periphery of the compression unit is surrounded by a package in order to improve silence and the like. This package type air compressor is configured to accommodate a compression unit, an air tank, and the like in a package having a soundproof structure. Thereby, at the time of compression operation, it is possible to reduce noise and improve safety by the compression unit of the compression unit and the cooling fan.

  Further, as described above, noise is generated by a compression unit including a compression unit and a cooling fan, and the air tank itself does not generate noise. Moreover, the air tank is often larger than the compression unit, and the package is enlarged to surround the air tank.

  Therefore, there is a package type air compression device in which a compression unit including a soundproof structure package and a compression unit that is a noise generation source housed in the package is disposed on an air tank ( For example, see Patent Document 1 and Patent Document 2).

Japanese Utility Model Publication No. 53-160006 JP 50-115309 A

  By the way, the package type air compression apparatus by each patent document mentioned above is in the place which left | separated the air intake and the discharge port so that the cooling air discharged | emitted in the state where the temperature rose may not be taken in in a package again. It is arranged.

  However, in the case where a plurality of compression units containing the compression unit are disposed in the package, the adjacent compression unit may suck in the cooling air whose temperature has risen discharged from the compression unit, and the cooling efficiency of the compression unit, There is a problem that the compression efficiency deteriorates.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to allow cooling air to be taken into the cover member even when a plurality of compression units are arranged side by side. An object of the present invention is to provide an air compressor capable of improving the cooling efficiency and the compression efficiency of the part.

  In order to solve the above-described problems, an air compression apparatus according to the invention of claim 1 compresses the sucked air disposed in the cover member and a cover member having an air intake and through which cooling air flows. A plurality of compression units each including a compression unit for discharging are provided, and the plurality of compression units are arranged facing each other such that the air intake ports face each other.

  According to a second aspect of the present invention, an air guide for guiding air toward the air intakes facing each other is provided between the cover members.

  According to invention of Claim 3, the said cover member which comprises the said compression unit is a package which covers the whole said compression part and makes it a soundproof structure.

  According to the first aspect of the present invention, the plurality of compression units are arranged with the cover members facing each other so that the air intake ports face each other. Thereby, an air intake can be collected in one place, and the situation where the adjacent cover member inhales the cooling wind which the temperature rises discharged | emitted from a cover member can be prevented. Therefore, the compression part in the cover member can be effectively cooled by the cold air, and the compression work can be efficiently performed by sucking the cold air.

  As a result, even when a plurality of compression units are arranged side by side, the cooled air can be taken into the cover member from the air intake port, so that the cooling efficiency and compression efficiency of the compression section can be improved.

  According to the second aspect of the present invention, the air guide provided between the cover members guides the air flowing toward the air intake so that they do not interfere with each other even when the air intake is opposed to the air guide. Can do. Thereby, air can be efficiently sucked into the cover member from the air intake port.

  According to invention of Claim 3, since the cover member is made into the package which makes the soundproof structure covering the whole compression part, the noise at the time of driving | running a compression part can be reduced.

  Hereinafter, as a typical example of an air compressor according to an embodiment of the present invention, a tank-mounted package type air compressor in which two compression units each containing a scroll-type compressor in a package are mounted on an air tank. An example will be described in detail with reference to FIGS.

  Reference numeral 1 denotes a tank-mounted package type air compressor according to the present embodiment. The package type air compression apparatus 1 includes a first compression unit 11 and a second compression unit 41 mounted side by side on an air tank 2 to be described later, and an air guide 59 for guiding air.

  First, reference numeral 2 denotes an air tank of the package type air compressor 1, and the air tank 2 constitutes a base for the two compression units 11 and 41. The air tank 2 stores compressed air discharged from compressor main bodies 24 and 54, which will be described later, and is formed as a cylindrical sealed container with both ends closed.

  Also, four wheels 2A (only two are shown) are provided at the lower position of the air tank 2. Further, a grip 2B is provided at the upper position of the air tank 2 to be gripped when moving at both ends in the left and right directions. Further, a control box 3 for controlling the operation of the compression units 11 and 41 is attached to the central position of the air tank 2.

  Next, 11 is a first compression unit constituting the package type air compressor 1. The first compression unit 11 is mounted on the right side of the air tank 2 when the packaged air compressor 1 is viewed from the front (operation surface). And the 1st compression unit 11 is roughly comprised by the below-mentioned package 12, the compression part 23, etc.

  Reference numeral 12 denotes a package as a cover member forming the outer shape of the first compression unit 11. This package 12 covers the whole of the compression part 23 mentioned later, for example, is formed as a substantially rectangular parallelepiped box-shaped case enclosed by the some steel plate etc., and has a soundproof structure.

  Here, as shown in FIGS. 1 to 6, the package 12 is erected on the pedestal 13 on which the compression unit 23 is mounted, the left panel 14 erected on the left side of the pedestal 13, and the right side of the pedestal 13. A portal panel 15, a right panel 16 provided by closing the right side of the portal panel 15, a front panel 17 provided in front of the left panel 14 and the portal panel 15, The rear panel 18 and the ceiling panel 19 that are integrally provided from the back surface to the top surface between the panel 14 and the gate-type panel 15 are roughly configured.

  Reference numeral 13 denotes a pedestal serving as a base of the package 12, and the pedestal 13 is attached to the upper portion of the air tank 2 as shown in FIGS. The pedestal 13 supports the compressor main body 24 and is formed as a rectangular support base that is long in the left and right directions in the axial direction of the compressor main body 24. Here, as shown in FIG. 5, the pedestal 13 is provided with an external discharge port 21 for passing a discharge pipe 35 (described later) and cooling air on the right side of the compressor main body 24 on the compressed air discharge side. Yes.

  Reference numeral 14 denotes a left panel erected along the left end side of the base 13. The left panel 14 is formed in a box shape narrow in the left and right directions, and a lower end portion thereof is bolted to the pedestal 13. Further, on the left end surface 14A of the left panel 14, as will be shown in FIGS. 2 and 6, etc., an air inlet 20 described later for taking outside air into the package 12 as cooling air is formed.

  Reference numeral 15 denotes a gate-type panel erected on the right side of the base 13. The portal panel 15 is formed in a portal shape, and a lower end portion thereof is bolted to the base 13. An operation switch 15A and the like are attached to the front surface of the portal panel 15.

  Reference numeral 16 denotes a right panel attached to the right end of the pedestal 13 and the portal panel 15 so as to face the left panel 14. The right panel 16 is formed as a rectangular plate extending in the upward and downward directions. Further, the right panel 16 has a bulging portion 16A formed so as to bulge outward from the center to the lower side. The bulging portion 16A constitutes a part of an exhaust duct 38 to be described later. Further, as shown in FIG. 3, the lower end portion of the bulging portion 16A serves as another external discharge port 22 to be described later by opening obliquely on the right side.

  A front panel 17 is located between the left panel 14 and the gate-type panel 15 and covers the front surface. The front panel 17 is formed in a rectangular shape that is long in the left and right directions. The lower end of the front panel 17 is bolted to the pedestal 13 and the upper end is bolted to the front edge of a ceiling panel 19 described later.

  Reference numeral 18 denotes a rear panel that is located between the left panel 14 and the right panel 16 and covers the back surface, and 19 is a ceiling panel that covers the top surface. The rear panel 18 and the ceiling panel 19 are integrally formed by bending a plate material into an L shape. The rear panel 18 is formed in a rectangular shape that is long in the left and right directions, and the lower end portion thereof is bolted to the pedestal 13 in substantially the same manner as the front panel 17. On the other hand, the ceiling panel 19 is formed in a rectangular shape elongated in the left and right directions, and the left and right ends thereof are bolted to the left panel 14 and the portal panel 15.

  Reference numeral 20 denotes an air intake port of the package 12 provided in the left panel 14. 2 and 3, the air intake 20 is provided on the left end surface 14A of the left panel 14 so as to face an air intake 50 of a package 42 constituting a second compression unit 41 described later. Yes. The air inlet 20 is an opening for taking outside air into the package 12, and is formed by a large number of small holes as shown in FIG.

  An external discharge port 21 is provided on the right side of the base 13 so as to face the air tank 2. The external discharge port 21 discharges the cooling air discharged from the cooling air guide 37 toward the air tank 2. The external discharge port 21 also serves as an insertion hole through which a discharge pipe 35 described later is passed. Reference numeral 22 denotes another external outlet provided at the lower end of the bulging portion 16A of the right panel 16. Since each of the external discharge ports 21 and 22 is open toward the air tank 2, it is possible to discharge cooling air flowing through an exhaust duct 38 described later toward the air tank 2.

  Next, reference numeral 23 denotes a compression unit of the first compression unit 11 provided in the package 12. The compression unit 23 is mainly configured by a compressor main body 24 (described later) that compresses and discharges the sucked air, and a cooling air guide 37 that cools the compressor main body 24.

  Reference numeral 24 denotes a compressor main body forming the main body portion of the compression unit 23. The compressor body 24 sucks and compresses air and discharges the compressed air, and is configured as, for example, a scroll type air compressor. Further, as shown in FIG. 7, the compressor body 24 includes a casing 25, an electric motor 28, scrolls 30 and 31, a cooling fan 36, and the like which will be described later.

  A casing 25 forms an outer frame of the compressor body 24. The casing 25 includes a motor case 26, a scroll case 27, and the like. The motor case 26 accommodates an electric motor 28, which will be described later, and is formed in a bottomed cylindrical shape that is open on the left side in the axial direction and closed on the right side. Further, the lower side of the motor case 26 is an oil tank 26A for storing oil for cooling and lubrication. Further, as shown in FIGS. 7 and 8, support legs 26B are provided at the lower end of the motor case 26. Between the support legs 26B, a passage portion 26C constituting a part of a cooling air guide 37 described later. It has become.

  On the other hand, a lid 27 </ b> A that covers the opening side of the motor case 26 is integrally formed with the scroll case 27 provided on the opening side of the motor case 26. In addition, the scroll case 27 is provided with an annular recess 27B that is arranged in a state in which an end plate 31A of the orbiting scroll 31 described later is in sliding contact.

  Reference numeral 28 denotes an electric motor provided in the motor case 26 of the casing 25. The electric motor 28 has a cylindrical stator 28A fixed to the inner peripheral side of the motor case 26, and is rotatably disposed on the inner peripheral side of the stator 28A. The electric motor 28 is integrally attached to the drive shaft 29. This is roughly constituted by the rotor 28B. One end side of the drive shaft 29 protrudes from the motor case 26, and a cooling fan 36 described later is provided on the protruding end side. On the other hand, the other end side of the drive shaft 29 protrudes from the lid portion 27A of the scroll case 27 to form a crank 29A.

  Reference numeral 30 denotes a fixed scroll provided in the scroll case 27 of the casing 25. The fixed scroll 30 surrounds the disc-shaped end plate 30A disposed coaxially with the drive shaft 29, the spiral wrap portion 30B standing on the surface of the end plate 30A, and the wrap portion 30B. A cylindrical portion 30C that protrudes axially from the outer peripheral side of the end plate 30A toward the orbiting scroll 31, an annular flange portion 30D that protrudes radially outward from the protruding end side of the cylindrical portion 30C, and a rear surface side of the end plate 30A. The plurality of heat dissipating fins 30E are provided.

  A revolving scroll 31 is provided in the casing 25 so as to be revolving on the drive shaft 29. The orbiting scroll 31 includes a disc-shaped end plate 31A and a spiral wrap portion 31B standing on the surface of the end plate 31A, and the center of the end plate 31A is rotatably attached to the crank 29A of the drive shaft 29. It has been.

  Here, the orbiting scroll 31 is disposed such that the wrap portion 31B overlaps the wrap portion 30B of the fixed scroll 30 with a shift of 180 degrees, for example. Thereby, the some compression chamber 32 can be defined between these lap | wrap parts 30B and 31B. Then, as the orbiting scroll 31 reciprocates, the air sucked into the outer peripheral compression chamber 32 from the suction filter 33 (described later) is sequentially compressed, and from the compression chamber 32 (described later) via the discharge port 34 (described later). The compressed air is discharged to the air tank 2 side.

  Reference numeral 33 denotes, for example, two suction filters provided on the outer peripheral side of the fixed scroll 30, and each suction filter 33 removes dust and the like in the sucked air. Reference numeral 34 denotes a discharge port provided near the center of the end plate 30 </ b> A of the fixed scroll 30. The discharge port 34 discharges compressed air from the central compression chamber 32 to the outside.

  A discharge pipe 35 is connected to the discharge port 34. As shown in FIG. 3, the discharge pipe 35 guides compressed air discharged from the compressor body 24 to the outside, and the base end side is connected to the discharge port 34. Further, the discharge pipe 35 is formed in a substantially U shape by bending downward and leftward sequentially while extending rightward, and its tip is connected to the air tank 2 through the external discharge port 21.

  Reference numeral 36 denotes a cooling fan located on one side of the motor case 26 and attached to the drive shaft 29. The cooling fan 36 is configured as a suction-type centrifugal fan that rotates and blows air sucked from the center to the outer peripheral side by centrifugal force.

  Reference numeral 37 denotes a cooling air guide constituting the compression unit 23. The cooling air guide 37 is provided so as to cover the compressor body 24. The cooling air guide 37 circulates the cooling air from the cooling fan 36 from the left side to the right side around the compressor body 24 to cool the compressor body 24 from the upper side and the lower side.

  Here, the cooling air guide 37 includes a fan side duct 37A provided so as to cover the cooling fan 36 and the motor case 26 of the casing 25, and a scroll side provided so as to cover the scroll case 27 and the upper part of the fixed scroll 30. An upper duct 37B, a scroll side lower duct 37C provided so as to cover the lower side of the scroll case 27 and the fixed scroll 30, a cooling air inlet 37D provided in the center of the fan side duct 37A, and a scroll side upper duct 37B And a cooling air outlet 37E provided between the scroll side lower duct 37C.

  Reference numeral 38 denotes an exhaust duct provided in the package 12 on the pedestal 13. The exhaust duct 38 circulates the cooling air flowing out from the outlet 37 </ b> E of the cooling air guide 37 toward the external outlets 21 and 22. The exhaust duct 38 has one side connected to the cooling air outlet 37E and the other side connected to the external outlet 21 and the like. As shown in FIGS. 3 and 5, the exhaust duct 38 includes the bulging portion 16A of the right panel 16, the inner frame 38A that forms the inner surface, and the outer surface that forms the outer surface formed in a gate shape. The frame 38B is roughly configured.

  Reference numeral 39 denotes an exhaust passage provided in the exhaust duct 38. The exhaust passage 39 is formed along the discharge pipe 35 so as to extend from the outlet 37 </ b> E of the cooling air guide 37 to the external outlet 21. The exhaust passage 39 can cool the discharge pipe 35 by the circulating cooling air.

  The exhaust duct 38 configured as described above causes the cooling air flowing out from the outlet 37E of the cooling air guide 37 to flow downward along the discharge pipe 35 in the exhaust passage 39, and the external discharge port 21 of the base 13 and the right panel. The other 16 external discharge ports 22 are discharged to the outside. At this time, since the exhaust duct 38 discharges the cooling air together with the external discharge ports 21 and 22 downward, it is possible to prevent the cooling air whose temperature has increased from being sucked into the package 12 and the cooling air guide 37 again. , Cooling efficiency can be improved.

  Next, reference numeral 41 denotes a second compression unit arranged side by side on the left side of the first compression unit 11. The second compression unit 41 is roughly configured by a package 42, a compression unit 53, and the like, which will be described later, in substantially the same manner as the first compression unit 11.

  Here, the second compression unit 41 is symmetric with the first compression unit 11 in the length direction (left and right directions) of the air tank 2, and the air intake port 50 and the external discharge port 51, which will be described later, 52 are arranged at opposite positions on the left and right. Thereby, the 1st compression unit 11 and the 2nd compression unit 41 are arrange | positioned so that the air intake 20 and the air intake 50 may face each other. Accordingly, each of the compression units 11 and 41 can discharge the cooling air whose temperature has risen to a position away from the respective air intake ports 20 and 50.

  Reference numeral 42 denotes a package as a cover member forming the outer shape of the second compression unit 41. The package 42 is disposed on the air tank 2 so as to be located on the left side of the package 12 of the first compression unit 11. Further, the package 42 is formed as a substantially rectangular parallelepiped box surrounded by a plurality of steel plates or the like, for example, and has a soundproof structure, as in the package 12.

  Here, the air intake side and the air discharge side of the package 42 are arranged at opposite positions on the left and right so as to be symmetrical with the package 12 in the length direction (left and right directions) of the air tank 2. Yes. The package 42 includes a pedestal 43 on which a later-described compression unit 53 is mounted, a right panel 44 erected on the right side of the pedestal 43, a portal panel 45 erected on the left side of the pedestal 43, A left panel 46 having a bulging portion 46A provided by closing the left side of the portal panel 45, and a front panel 47, a rear panel 48, and a ceiling panel 49 provided between the right panel 44 and the portal panel 45. And is roughly composed.

  Reference numeral 50 denotes an air intake port of the package 42 provided in the right panel 44, and the air intake port 50 forms an opening for taking outside air into the package 42. Further, as shown in FIG. 3, the air intake 50 is provided on the right end surface 44 </ b> A of the right panel 44 that faces the air intake 20 of the package 12.

  An external discharge port 51 is provided on the left side of the pedestal 43 so as to face the air tank 2. Reference numeral 52 denotes another external outlet provided at the lower end of the bulging portion 46A of the left panel 46. These external discharge ports 51 and 52 discharge the cooling air at a position away from the air intake port 50.

  Next, reference numeral 53 denotes a compression unit of the second compression unit 41 provided in the package 42. Similar to the compression unit 23 described above, the compression unit 53 is mainly configured by a compressor main body 54 described later that compresses and discharges the sucked air, and a cooling air guide 56 that cools the compressor main body 54. Yes.

  Reference numeral 54 denotes a compressor main body forming the main body portion of the compression unit 53. The compressor body 54 has the same configuration as the compressor body 24 except that the compressor body 54 is disposed symmetrically. The compressor body 54 is connected to the air tank 2 through the discharge pipe 55.

  Reference numeral 56 denotes a cooling air guide provided so as to cover the compressor main body 54. The cooling air guide 56 cools the compressor main body 54 and has the same configuration as the cooling air guide 37 except that it is arranged symmetrically.

  Reference numeral 57 denotes an exhaust duct provided in the package 42, and an exhaust passage 58 is formed in the exhaust duct 57. The exhaust duct 57 causes the cooling air flowing out from the cooling air guide 56 to flow through the exhaust passage 58 along the discharge pipe 55, and discharges the air from the external discharge ports 51 and 52 toward the air tank 2.

  Next, 59 is an air guide of the package type air compressor 1, and the air guide 59 is provided between the two packages 12 and 42. The air guide 59 guides air toward the air intake ports 20 and 50, and includes a first guide portion 60 and a second guide portion 61 described later.

  Reference numeral 60 denotes a first guide portion constituting the air guide 59, and the guide portion 60 is attached to the first compression unit 11 side. Specifically, the first guide portion 60 is attached to the left panel 14 so as to cover the air intake port 20 as shown in FIGS. As shown in FIG. 5, the first guide portion 60 has a substantially box shape with the front side opened as an external opening 60A. As shown in FIG. 4, the first guide portion 60 is left with a space between the left end surface 14A. Attached to the panel 14.

  Thus, the first guide portion 60 guides the air taken from the external opening 60A on the front side toward the air intake port 20 without interfering with the air sucked by the package 42 on the second compression unit 41 side. The air can be efficiently taken into the package 12.

  In addition, since the first guide portion 60 covers the air intake port 20, it is possible to block noise that has passed through the air intake port 20. Furthermore, the first guide portion 60 opened to the front side of the package 12 can always be opened even when the package type air compressor 1 is installed on a wall.

  Reference numeral 61 denotes a second guide portion located on the second compression unit 41 side. The guide portion 61 is formed symmetrically with the first guide portion 60 and the package 42 so that the external opening 61A is on the front side. The right panel 44 is attached. As a result, the second guide portion 61, like the first guide portion 60 described above, does not interfere with the air sucked in by the package 12 on the first compression unit 11 side, and the air taken in from the external opening 61A. Can be guided toward the air intake 50.

  The package type air compressor 1 according to the present embodiment has the above-described configuration, and the operation thereof will be described next.

  First, the first compression unit 11 will be described as an example. The drive shaft 29 is rotationally driven by the electric motor 28 to cause the orbiting scroll 31 to orbit with respect to the fixed scroll 30. As a result, the compression chambers 32 defined between the wrap portions 30B and 31B continuously shrink from the radially outer side to the inner side, so that the air is passed from the suction filter 33 to the outer compression side 32. Is sucked in, and the air is compressed in the respective compression chambers 32 to become compressed air. The compressed air is discharged from the compression chamber 32 on the central side through the discharge port 34 and the discharge pipe 35 and stored in the air tank 2. Similarly, the second compression unit 41 can also store compressed air in the air tank 2.

  Further, when the first compression unit 11 is operated, a temperature rise is generated in each part due to frictional heat, compression heat, and the like, so that the compressor body 24 and the like are cooled with cooling air. In this case, when the cooling fan 36 is rotationally driven by the electric motor 28, air is sucked into the package 12 from the air intake port 20. At this time, as indicated by an arrow in FIG. 4, the first guide portion 60 does not interfere with the air sucked by the second compression unit 41, and external air flowing in from the external opening 60 </ b> A is allowed to enter the air intake port 20. It can guide smoothly toward.

  On the other hand, the air that has flowed into the package 12 from the air inlet 20 flows into the cooling air guide 37 from the cooling air inlet 37D, cools the compressor body 24 from the surroundings, and is discharged from the cooling air outlet 37E. The cooling air flowing out from the cooling air outlet 37 </ b> E flows through the exhaust passage 39 of the exhaust duct 38 and is discharged from the external discharge ports 21 and 22 toward the air tank 2.

  At this time, the external discharge ports 21 and 22 are provided at positions away from both the air intake port 20 (the external opening 60A of the first guide portion 60) and the air intake port 50 of the second compression unit 41. Therefore, the air exhausted due to the temperature rise is not sucked again. Since the flow of this air (cooling air) is the same for the second compression unit 41, the description thereof will be omitted.

  Thus, according to the present embodiment, when the two compression units 11 and 41 are arranged side by side, the air intake ports 20 and 50 of the packages 12 and 42 are arranged so as to face each other. Yes. As a result, the two compression units 11 and 41 collect the air intake ports 20 and 50 in one place, and the air intake ports 20 and 50 are connected to the external discharge ports 21 and 22 of the first compression unit 11, the second The compression unit 41 can be separated from any of the external discharge ports 51 and 52.

  Accordingly, the air intake ports 20 and 50 (external openings 60A and 61A of the guide portions 60 and 61) allow the cooled air to flow into the packages 12 and 42 without sucking the cooling air whose temperature has been exhausted from the packages 12 and 42. Can be incorporated into.

  As a result, even when the two compression units 11 and 41 are arranged side by side, the cooled air can be taken into the packages 12 and 42 from the air intake ports 20 and 50. It can be cooled effectively. Moreover, the compressor main bodies 24 and 54 which sucked in cold air can perform efficient compression work.

  Moreover, since the air guide 59 which guides air toward each air intake port 20 and 50 is provided between each package 12 and 42, even when the air intake ports 20 and 50 are arranged facing each other. The air flowing toward the air intake ports 20 and 50 can be prevented from interfering. Accordingly, the air guide 59 can efficiently suck air into the packages 12 and 42 from the air intake ports 20 and 50, and can improve cooling efficiency and compression efficiency.

  Furthermore, the guide portions 60 and 61 of the air guide 59 have external openings 60A and 61A for sucking outside air on the front side. Thereby, since each guide part 60 and 61 can cover the air intake ports 20 and 50, the noise at the time of a driving | operation can be reduced. Moreover, even when the package type air compressor 1 is installed near the wall, it can be always opened, and the degree of freedom of the installation method can be increased.

  In the embodiment, the packages 12 and 42 that cover the entire compression portions 23 and 53 including the compressor main bodies 24 and 54 and the cooling air guides 37 and 56 are provided as cover members, and the air intake ports of the packages 12 and 42 are provided. 20 and 50 are arranged to face each other so as to face each other. However, the present invention is not limited to this. For example, by eliminating the packages 12 and 42, the cooling air guides 37 and 56 of the compression units 23 and 53 are used as cover members, and the cooling air inlet 37D is opposed to each other as an air intake. It is good also as a structure arrange | positioned so that it may face. On the other hand, the cover member may not be an airtight container as long as it allows the cooling air to flow from one end to the other end.

  In the embodiment, the air guide 59 is constituted by two members, that is, the first guide part 60 on the first compression unit 11 side and the second guide part 61 on the second compression unit 41 side. Was described as an example. However, the present invention is not limited to this, and the air guide may be configured as a single partition plate disposed so as to separate the air intake ports 20 and 50.

  On the other hand, for example, when the first and second compression units 11 and 41 are arranged as shown in FIG. 2, the air guide 59 may be eliminated. Thus, even if the air guide 59 is abolished, the cooling air can be taken in from the air intake ports 20 and 50, respectively.

  In the embodiment, the case where the two compression units 11 and 41 are mounted on the upper side of the air tank 2 has been described as an example. However, the present invention is not limited to this, and for example, an air tank may be provided in a lateral position of the compressor. Moreover, it is good also as a structure which abolishes the air tank 2. FIG. On the other hand, it is good also as a structure which provides three or more compression units.

  Further, in the embodiment, the package type air compressor 1 on which the scroll type compressor main bodies 24 and 54 that are typical examples of the rotary compressor are mounted as the air compressor has been described as an example. However, the present invention is not limited to this, and may be configured to include other rotary compressors such as a vane compressor and a trochoid compressor, and a reciprocating type in which a piston reciprocates in a cylinder. It is good also as a structure carrying a compressor.

It is an external appearance perspective view which shows the package type air compression apparatus by embodiment of this invention. It is an external appearance perspective view which shows a package type air compression apparatus in the state which removed the air guide. It is sectional drawing of the package type air compressor which shows the internal structure of each compression unit. It is sectional drawing of the package type air compression apparatus which looked at the internal structure of each compression unit from the arrow IV-IV direction in FIG. It is a disassembled perspective view which decomposes | disassembles and shows the package and exhaust duct of a package type air compression apparatus. It is the external appearance perspective view which looked at the assembled package from the air intake side. It is sectional drawing which expands and shows a compression part. It is a disassembled perspective view which decomposes | disassembles and shows the compressor main body and cooling air guide of a compression part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Package type air compressor 2 Air tank 11 1st compression unit 12,42 Package (cover member)
20, 50 Air intake port 21, 51 External discharge port 22, 52 Other external discharge port 23, 53 Compressor 24, 54 Compressor body 37, 56 Cooling air guide 41 Second compression unit 59 Air guide 60, 61 Duct Part

Claims (3)

A plurality of compression units comprising a cover member having an air intake and a cooling air flowing therein, and a compression unit disposed in the cover member and compressing and discharging the sucked air,
An air compression apparatus configured to arrange the plurality of compression units so that the air intake ports face each other.   The air compressor according to claim 1, wherein an air guide that guides air toward the air intakes facing each other is provided between the cover members.   The air compression device according to claim 1 or 2, wherein the cover member constituting the compression unit is a package that covers the entire compression portion and has a soundproof structure.

Images